added readme for Sudoku Solver

Author: kushpo357

SudokuSolver/kushpo357/Readme.md

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+# Sudoku Solver
+
+A web-based Sudoku Solver that allows users to input a 9x9 Sudoku puzzle and solve it with a single click. Built with HTML, CSS, JavaScript, and TailwindCSS.
+
+## Features
+- Interactive 9x9 Sudoku grid for input.
+- Validates input to allow only numbers 1-9.
+- Solves the puzzle instantly or alerts if no solution exists.
+- Reset functionality to clear the grid.
+
+## Tech Stack
+- **Frontend**: HTML, TailwindCSS for styling.
+- **Logic**: JavaScript for puzzle solving using a backtracking algorithm.
+
+## File Structure
+- `index.html`: Core structure of the webpage.
+- `styles.css`: Styling for the Sudoku grid and buttons.
+- `script.js`: Logic for solving the Sudoku puzzle and interactive functionalities.
+
+## How to Use
+1. Open `index.html` in your browser.
+2. Enter numbers 1-9 in the grid (leave empty cells as blank).
+3. Click **Solve** to see the solution or **Reset** to clear the grid.
+
+## Algorithm
+- Uses a backtracking approach to solve the Sudoku puzzle.
+- Checks each cell to ensure compliance with Sudoku rules.
+
+## Demo
+Initial position
+![alt text](image.png)
+
+inputing a sudoku problem
+![alt text](image-1.png)
+
+submitting and generating a solution
+![alt text](image-2.png)
+---
+
+